As a melee touch attack, you can cause a living creature to take 1d6 points of damage per round. This effect persists for a number of rounds equal to 1/2 your cleric level (minimum 1) or until stopped with a DC 15 Heal check or any spell or effect that heals damage.

You can use this ability a number of times per day equal to 3 + your Wisdom modifier.

At 8th level, you heal damage instead of taking damage from channeled negative energy. If the channeled negative energy targets undead, you heal hit points just like undead in the area.

At 1st level, you can take on a corpse-like visage for 1 minute, making you more intimidating and giving you undead-like protection from harm. You gain a +4 bonus on Persuasion skill checks made to intimidate, as well as a +2 profane bonus on saving throws against disease, mind-affecting effects, paralysis, poison, and stun.

At 10th level, you can make a melee touch attack against an opponent to deliver grim suffering. If you succeed, you inflict 1 temporary negative level on the target for 1 minute. Alternatively, you can activate this ability as a swift action to make your next melee attack during the next minute apply the effect. These temporary negative levels stack. You gain no benefit from imposing these negative levels (such as the temporary hit points undead gain from enervation).